Found both of my thermometers and now have them both at the same time.
They were within 2 feet of each other in the kitchen.
The reason is I am going to do a little testing of the soil temperature in the tubs and see just what difference color and shading make.
I figure it will take anywhere from 24 to 48 hours to get a good reading.
This will give all of that mass time to adjust and settle down with no added water to mess up the readings.
Worth